interfaceCompression

Description

The interfaceCompression is a generic boundary condition that applies interface-compression to the phase-fraction distribution at the patch by setting the phase-fraction to 0 if it is below 0.5, otherwise to 1.

This approach is useful to avoid unphysical "bleed" of the lighter phase along the surface in regions of high shear adjacent to the surface which is at a shallow angle to the interface.

Usage

The condition requires entries in both the boundary and field files.

Boundary file

<patchName>
{
    type            patch;
    ...
}

Field file

<patchName>
{
    // Mandatory entries
    type            interfaceCompression;

    // Inherited entries
    ...
}

where:

Property	Description	Type	Required	Default
type	Type name: interfaceCompression	word	yes	-

The inherited entries are elaborated in:

• Foam::fixedValueFvPatchField

Further information

Tutorial:

• N/A

Source code:

• interfaceCompression

API:

• Foam::interfaceCompressionFvPatchScalarField

History: Introduced in version v1706